I prefer the analog rather than the simulated, where the simplest problem areas are overlooked because of the fancy visualization. Nobody can make anything of the last view of the OG...... My advice, put the PC away for a moment and take the trouble for us willing participants to also enter every measurement (width of corridor, windows, doors, etc.), to correctly name every room and rewrite exactly what it is you mean. It may also be due to my limited imagination, but in this way so far it is really hard for me to participate.